40405136

素因数分解:

$2^4\times {\mathrm{137}}^1\times {\mathrm{18433}}^1$

素因数の和:18578

約数の個数: 20

約数和(自身を含む): 78860652

約数和(自身を除く): 38455516

約数列:

[1, 2, 4, 8, 16, 137, 274, 548, 1096, 2192, 18433, 36866, 73732, 147464, 294928, 2525321, 5050642, 10101284, 20202568, 40405136]

約数ペア:

[(1, 40405136), (2, 20202568), (4, 10101284), (8, 5050642), (16, 2525321), (137, 294928), (274, 147464), (548, 73732), (1096, 36866), (2192, 18433)]